RT9711DGF Equivalent & Substitute Parts

Part Overview

The RT9711DGF is an active N-Channel power switch manufactured by Richtek USA Inc., designed for USB switching applications. This 1:1 ratio, high-side switch delivers 600mA maximum output current in an 8-MSOP package and operates across a 2.5V to 5.5V load voltage range. The device includes integrated current limiting, over-temperature protection, reverse current blocking, and UVLO fault protection with status flag output.

Substitute parts are necessary when the RT9711DGF reaches end-of-life status, inventory constraints occur, or design requirements demand higher current capacity, improved thermal performance, or alternative packaging configurations while maintaining functional compatibility.

Substiute Parts

RT9711DGF

Richtek USA Inc.In Stock: 3827RT9711DGF Datasheet

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BD82028FVJ-GE2

Rohm SemiconductorIn Stock: 230217BD82028FVJ-GE2 Datasheet

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BD82029FVJ-GE2

Rohm SemiconductorIn Stock: 1293BD82029FVJ-GE2 Datasheet

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BD82030FVJ-GE2

Rohm SemiconductorIn Stock: 60271BD82030FVJ-GE2 Datasheet

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BD82031FVJ-GE2

Rohm SemiconductorIn Stock: 2886BD82031FVJ-GE2 Datasheet

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BD82034FVJ-GE2

Rohm SemiconductorIn Stock: 18221BD82034FVJ-GE2 Datasheet

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STMPS2151TTR

STMicroelectronicsIn Stock: 1705STMPS2151TTR Datasheet

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STMPS2171TTR

STMicroelectronicsIn Stock: 5700STMPS2171TTR Datasheet

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TPS2000CDGK

Texas InstrumentsIn Stock: 1898TPS2000CDGK Datasheet

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TPS2000CDGN

Texas InstrumentsIn Stock: 1128TPS2000CDGN Datasheet

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TPS2001CDGK

Texas InstrumentsIn Stock: 3763TPS2001CDGK Datasheet

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TPS2001CDGN

Texas InstrumentsIn Stock: 16895TPS2001CDGN Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Output Configuration: High side, N-Channel, 1:1 ratio (mandatory match)
• Interface Type: On/Off control (mandatory match)
• Fault Protection: Current limiting, over-temperature, reverse current, and UVLO protection (mandatory match)
• Package Compatibility: 8-MSOP or 8-TSSOP footprint (0.118", 3.00mm width) with identical pinout
• Voltage Range: Load voltage 2.5V ~ 5.5V or 4.5V ~ 5.5V (4.5V ~ 5.5V is subset-compatible)
• Current Rating: 600mA minimum (higher ratings acceptable for drop-in replacement)
• Rds On: Lower or equal values acceptable (90mOhm reference)
• Operating Temperature: -40°C ~ 125°C or -40°C ~ 85°C (both acceptable for industrial range)

Substitute parts are grouped by current capacity tier: 500mA–600mA (direct replacement), 1A–1.5A (upgraded capacity), and 2A–2.5A (high-capacity variants).

Parameter Comparison

Engineering Selection Recommendations

Direct Current-Matched Substitutes (600mA)

BD82029FVJ-GE2 provides electrical equivalence at 600mA output current with improved Rds On (72mOhm vs. 90mOhm). Voltage range narrows to 4.5V ~ 5.5V, which is acceptable for USB applications. Operating temperature maximum reduces to 85°C (TA) versus 125°C (TJ) on the RT9711DGF. Package changes from 8-MSOP to 8-TSSOP-BJ, requiring PCB layout modification. ROHS3 compliance and MSL rating (1 vs. 3) improve moisture handling. Inventory availability is limited (1,229 units).

STMPS2151TTR maintains 8-MSOP package compatibility and preserves -40°C ~ 125°C operating range. Current capacity is lower at 500mA, suitable only for applications with reduced load requirements. Rds On is higher at 110mOhm. Voltage range extends to 2.7V minimum, providing broader compatibility. Inventory is limited (1,660 units).

Upgraded Current Capacity Substitutes (1A–1.5A)

BD82028FVJ-GE2, BD82030FVJ-GE2, and BD82031FVJ-GE2 offer 1A to 1.5A output current with identical 72mOhm Rds On. All use 8-TSSOP-BJ packaging and operate at -40°C ~ 85°C. Voltage range is 4.5V ~ 5.5V. These parts are suitable for designs requiring higher current headroom while maintaining USB switch functionality. Inventory availability ranges from 1,229 to 60,200 units.

STMPS2171TTR provides 1A capacity in 8-MSOP package with -40°C ~ 125°C range and 2.7V ~ 5.5V voltage compatibility. Rds On is 110mOhm. Inventory is adequate (5,656 units).

High-Capacity Substitutes (2A–2.5A)

BD82034FVJ-GE2 delivers 2.5A maximum current in 8-TSSOP-BJ package with 72mOhm Rds On and -40°C ~ 85°C operating range. Voltage range is 4.5V ~ 5.5V. Inventory is substantial (18,130 units).

TPS2001CDGK provides 2A capacity with non-inverting input logic, matching the RT9711DGF control polarity. Package is 8-VSSOP with 72mOhm Rds On and -40°C ~ 85°C range. Voltage range is 4.5V ~ 5.5V. Inventory is available (3,660 units).

TPS2000CDGK and TPS2000CDGN both deliver 2A capacity with 72mOhm Rds On but use inverting input logic, requiring control signal inversion in the design. TPS2000CDGK uses 8-VSSOP; TPS2000CDGN uses 8-HVSSOP with exposed pad. Inventory is limited (1,058–1,836 units).

All substitute parts maintain ROHS3 compliance and EAR99 export classification. Selection depends on package footprint availability, current requirement, voltage range necessity, and operating temperature constraints.

Frequently Asked Questions (FAQ)

Q: Can BD82029FVJ-GE2 replace RT9711DGF in a 2.5V application?

A: No. BD82029FVJ-GE2 operates at 4.5V ~ 5.5V load voltage, which excludes 2.5V operation. The RT9711DGF supports 2.5V ~ 5.5V. For 2.5V applications, use STMPS2151TTR or STMPS2171TTR, which support 2.7V ~ 5.5V minimum.

Q: What is the difference between 8-MSOP and 8-TSSOP packaging?

A: Both are 8-pin surface-mount packages with 0.118" (3.00mm) width and identical pinout. 8-MSOP is a Richtek/STMicroelectronics variant; 8-TSSOP-BJ is a Rohm variant. PCB footprints are compatible, but component placement and solder reflow profiles may require minor adjustment. Consult manufacturer datasheets for exact pad dimensions.

Q: Why do TPS2000 parts have inverting input logic while RT9711DGF is non-inverting?

A: Input logic inversion means the control signal polarity is reversed. TPS2000CDGK and TPS2000CDGN require a logic-low input to enable the switch, whereas RT9711DGF and most substitutes require logic-high. This requires firmware or hardware modification and is not a direct drop-in replacement.

Q: Is TPS2001CDGK a direct replacement for RT9711DGF?

A: TPS2001CDGK matches non-inverting input logic and provides 2A capacity (exceeds 600mA requirement). However, package changes from 8-MSOP to 8-VSSOP, and voltage range narrows to 4.5V ~ 5.5V. Operating temperature reduces to -40°C ~ 85°C. These differences require PCB redesign and thermal re-evaluation but are functionally compatible for USB switching.

Q: What does "Load Discharge" feature mean?

A: Load discharge actively pulls the output to ground when the switch is disabled, preventing floating node conditions and reducing parasitic current draw. RT9711DGF does not include this feature; BD82028FVJ-GE2, BD82030FVJ-GE2, and BD82031FVJ-GE2 do. This is beneficial but not required for functional equivalence.

Q: Can I use a 2.5A part (BD82034FVJ-GE2) in place of a 600mA part (RT9711DGF)?

A: Yes. Higher current-rated switches are functionally compatible for lower-current applications. The device will not draw more current than the load requires. However, verify that the package footprint (8-TSSOP-BJ vs. 8-MSOP) and voltage range (4.5V ~ 5.5V vs. 2.5V ~ 5.5V) are acceptable for your design.

Q: What is MSL (Moisture Sensitivity Level) and why does it matter?

A: MSL indicates how long a component can be stored in ambient conditions before moisture absorption requires baking before reflow soldering. RT9711DGF is MSL 3 (168 hours); most substitutes are MSL 1 (unlimited). Lower MSL values reduce manufacturing risk and storage constraints.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for industrial and consumer applications.